The reduction of sound transmission to the interior fuselage of modern jet
aircraft is gaining increasing concern in an ever-competitive international
market. In an attempt to identify effective, weight-saving noise control
strategies, active control of sound transmission through elastic plates has
received much attention in the literature. While many of these investigations
have demonstrated promising results, none of them have considered the effects on
plate dynamics by convected fluid loading. Past investigations into the effects
of convected fluid loading on plates (i.e., aeroelasticity) have demonstrated
significant effects on plate response in the high subsonic and supersonic Mach
number range. This is the typical operating range for current and future
commercial aircraft. The objective of this investigation is to demonstrate the
effectiveness of active control on the transmission of turbulent boundary layer
noise through an aeroelastic plate and to highlight the importance of including
convected fluid loading in the model. Development of a fully coupled model will
be presented for a plate subjected to convected fluid loading on one side and
acoustic loading on the other will be presented. Finally, the effectiveness of
active control employing co-located piezoelectric transducers on the plate will
be presented.